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Message boards : Number crunching : FMA application for windows_x86_64
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Other important factors while comparing computers, for our application, are the RAM speed and CPU cache size. I'd like to learn about this. | |
ID: 2201 · Reply Quote | |
Other important factors while comparing computers, for our application, are the RAM speed and CPU cache size. I changed my PC from single channel to dual channel RAM, effectively doubling the RAM speed, but nothing went faster, not one of the 10 projects I run. I guess the cache inside the CPU outweighed the slow RAM. | |
ID: 2202 · Reply Quote | |
Depends on the science application and whether most of the application memory read/writes can fit in the cpu L3 cache. | |
ID: 2203 · Reply Quote | |
Is there any way to trigger the Instruction Set retest??? I ran CPU Benchmarks. Two computers changed a lot and that triggered it. Several computers are obviously running a slower IS. Wish I had a Trigger button to push. | |
ID: 2205 · Reply Quote | |
Depends on the science application and whether most of the application memory read/writes can fit in the cpu L3 cache. Maybe those projects that don't quite fit in the cache are only using RAM occasionally, so my doubling of the RAM speed was still negligible. It didn't speed up the game Fallout 4 either, despite people saying that game in particular would be faster. I guess the Ryzen has a good large cache. | |
ID: 2206 · Reply Quote | |
Tried Resetting the project and also detaching and attaching. Neither work. Still have computers stuck on the slow IS.Is there any way to trigger the Instruction Set retest??? I guess I have to learn how to configure an app_info file to force the correct IS. | |
ID: 2207 · Reply Quote | |
Placing this app_info.xml file in my project folder switched from avx to fma: <app_info>
<app>
<name>gene_pcim</name>
</app>
<file_info>
<name>gene_pcim_v1.10_linux64__fma</name>
<executable/>
</file_info>
<app_version>
<app_name>gene_pcim</app_name>
<version_num>110</version_num>
<avg_ncpus>1.000000</avg_ncpus>
<flops>6420118510.968211</flops>
<plan_class>fma</plan_class>
<api_version>7.9.0</api_version>
<file_ref>
<file_name>gene_pcim_v1.10_linux64__fma</file_name>
<main_program/>
</file_ref>
</app_version>
</app_info> Has a different Application Name displayed in BoincTasks but it seems to be working good so far. | |
ID: 2209 · Reply Quote | |
Yes, that is the brute force method. | |
ID: 2210 · Reply Quote | |
And I get a better Application Name: gene_pcim (fma) | |
ID: 2211 · Reply Quote | |
Placing this app_info.xml file in my project folder switched from avx to fma: A wish came true! I will try this app_info on my AMD 3950x, hope this will change the WU from sse2 to fma. | |
ID: 2213 · Reply Quote | |
On my FX-8370, FMA jobs fail. | |
ID: 2326 · Reply Quote | |
It only makes sense that all i9s should work best using the same instruction set. As far back as my log goes, to 6 June, my i9-10900F was running avx. Then on 17 June it switched over to sse2, with no obvious change in the run times. I will try forcing it to fma. I don't want to wait until Christmas to see what happens. As I recall, my i7-8700 ended up on fma eventually, as did my Ryzen 3000s. For some reason, this project favors Intel. That is not always the case. | |
ID: 2327 · Reply Quote | |
As far back as my log goes, to 6 June, my i9-10900F was running avx. Then on 17 June it switched over to sse2, with no obvious change in the run times. FMA brought it down from 3:17 (with avx or sse2) to 3:10. Nice, but no big deal. | |
ID: 2328 · Reply Quote | |
How would the app_info.xml file look like for a Win10 machine? Tried various ways, but none worked for me. Any pointer highly appreciated. Thx | |
ID: 2330 · Reply Quote | |
On my FX-8370, FMA jobs fail. That was the main reason I kept FMA for Windows as beta. I guess that in your case a MB BIOS upgrade might help. I moved the FMA/Win64 app out of beta a few days ago, to see if the old problems were solved, I will probably switch it back to beta... | |
ID: 2331 · Reply Quote | |
On my FX-8370, FMA jobs fail.I guess that in your case a MB BIOS upgrade might help. ASUS Sabertooth 990FX R2.0, BIOS latest version 2901. | |
ID: 2333 · Reply Quote | |
On my FX-8370, FMA jobs fail.I guess that in your case a MB BIOS upgrade might help. Well, I don't know how to solve your particular problem... In the meantime I moved the FMA Win64 application to beta again. If someone would like to give it a try please enable beta applications in your TN-Grid preferences. | |
ID: 2334 · Reply Quote | |
On my FX-8370, FMA jobs fail.I guess that in your case a MB BIOS upgrade might help. Never mind! ) | |
ID: 2335 · Reply Quote | |
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Number crunching :
FMA application for windows_x86_64